linux-kernel - RE: [PATCH 1/2] e100: power down PHY if WOL is not enabled

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Message-ID: <1323900468.2753.22.camel@bwh-desktop>
Date:	Wed, 14 Dec 2011 22:07:48 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Jiang Wang <Jiang.Wang@...erbed.com>
CC:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Bruce Allan <bruce.w.allan@...el.com>,
	Carolyn Wyborny <carolyn.wyborny@...el.com>,
	Don Skidmore <donald.c.skidmore@...el.com>,
	Greg Rose <gregory.v.rose@...el.com>,
	Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>,
	Alex Duyck <alexander.h.duyck@...el.com>,
	John Ronciak <john.ronciak@...el.com>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Prasanna Panchamukhi <Prasanna.Panchamukhi@...erbed.com>,
	Chaitanya Lala <Chaitanya.Lala@...erbed.com>,
	"Francis St. Amant" <Francis.St.Amant@...erbed.com>,
	"miles.ito@...el.com" <miles.ito@...el.com>
Subject: RE: [PATCH 1/2] e100: power down PHY if WOL is not enabled

On Wed, 2011-12-14 at 21:59 +0000, Jiang Wang wrote:
> Hi Ben,
> 
> Do you mean the WOL is enabled but PHY is powered off somehow? That
> scenario should never happen. If WOL is enabled, there is no code to
> power off PHY.
[...]

Initial conditions: interface up, WOL off, PHY on.

1. Bring interface down. PHY is turned off.
2. Turn WOL on.  PHY is still off, but needs to be on.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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